MEM09002B

Interpret technical drawing

MEM09204A

Produce basic engineering detail drawings

1

Determine schematic drawing requirements

1.1

Check purpose, scope and information requirements for drawing

1.2

Interpret available information relevant to project and work requirements, and identify and address further information needs

1.3

Identify and prepare equipment required to complete work

1.4

Identify and access organisational files, templates and symbols as required for work

2

Identify system requirements

2.1

Identify and apply relevant codes, standards and symbols used for electrical diagrams and drawings

2.2

Identify function and purpose of circuit and its components and assemblies

2.3

Identify environmental implications of inefficient systems and strategies for minimising impact

3

Prepare electrical drawings and diagrams

3.1

Lay out drawing in accordance with the sketches and specifications

3.2

Prepare an electrical block diagram in accordance with Australian Standards

3.3

Draw cable run and riser diagrams from schedules

3.4

Produce switchboard layout drawings

3.5

Prepare single line and interconnecting electrical diagrams in accordance with Australian Standards

3.6

Prepare wiring and circuit diagrams in accordance with Australian Standards

3.7

Ensure drawing accurately reflects specifications, is presented according to organisational requirements and contains all relevant information, including correct line work, scales, notation and dimensioning

3.8

Apply workplace occupational health and safety (OHS) and environmental procedures

4

Prepare materials list

4.1

Where required, select components and/or materials from supplier/manufacturer catalogues using predetermined specifications

4.2

Produce a parts list in accordance with workplace procedures

4.3

Store drawings and/or materials list according to workplace procedures

5

Consult appropriately with other disciplines

5.1

Verify the parameters of the brief and clarify specifications with appropriate personnel

5.2

Identify and consult with support services

5.3

Present and explain drawings at appropriate stages of the project

Required skills

Required skills include:

literacy skills sufficient to read and interpret instructions, relevant codes of practice and specifications for drawings work

using computer technologies and navigating software

numeracy skills sufficient to interpret technical information and conduct mathematical problem solving as required in the scope of this unit

using and maintaining drawing equipment

applying spatial principles to achieve scale and proportion

interpersonal skills to consult with other disciplines

drafting skills

applying symbols, schedules and legends to the drawing

arranging the views in a logical manner and in accordance with AS 1102.101–1989 Graphical symbols for electrotechnical documentation – General information and general index, or equivalent

correctly using line thickness and construction to identify parts

using engineering and manufacturer catalogues, tables, standards and specifications

drawing electrical/electronic schematics correctly and indicating the relative position of the components

producing electrical/electronic drawings with all relevant specifications

obtaining the circuit/component specifications

planning and sequencing operations

checking and clarifying task related information

filing drawings according to workplace procedures

Required knowledge

Required knowledge includes:

general knowledge of different approaches to drawing

awareness of copyright and intellectual property issues and legislation in relation to drawing

requirements of AS 1102.101–1989 Graphical symbols for electrotechnical documentation – General information and general index, or equivalent with respect to electrical/electronic schematics/drawings

environmental and OHS issues associated with the tools and materials used for drawing

quality assurance procedures

company standards for CAD

order of drawing process

company checking procedures for drawings

layout and presentation

the standards applicable to the work to be undertaken

the process of checking the completed drawing

the process of storing paper drawings and electronic drawing files

the International System of Units (SI)

terminology associated with the preparation of electrical diagrams and drawings

basic components used in electrical installations

wiring types used in electrical installations

functions of components, such as:

resistors

capacitors

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria required skills and knowledge range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

A person who demonstrates competency in this unit must be able to interpret and apply drawing specifications in the production of electrical diagrams and drawings to Australian Standard AS1102.101–1989 Graphical symbols for electrotechnical documentation – General information and general index, or equivalent.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts.

Specifically the candidate must be able to:

work within typical site/teamwork structures and methods

apply worksite communication procedures

comply with organisational policies and procedures, including quality requirements

participate in work meetings

comply with quality requirements

use industry terminology

apply appropriate safety procedures

obtain required information for work and produce detailed electrical/electronic schematic drawings in accordance with AS1102.101–1989 Graphical symbols for electrotechnical documentation – General information and general index, or similar.

Context of and specific resources for assessment

This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, that is the candidate is not in productive work, then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations. The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team.

Where applicable, reasonable adjustment must be made to work environments and training situations to accommodate ethnicity, age, gender, demographics and disability.

Access must be provided to appropriate learning and/or assessment support when required. Where applicable, physical resources should include equipment modified for people with disabilities.

This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with drafting or other units requiring the exercise of the skills and knowledge covered by this unit.

Method of assessment

Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways, including direct observation, supervisor's reports, project work, samples and questioning. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit of competency. The candidate must have access to all tools, equipment, materials and documentation required. The candidate must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials.

Available information

Available information may include:

construction documents

building and coordination information

work specifications

information for plant services equipment

industry codes, standards and regulations

catalogues and manuals

design brief

Components and assemblies

Components and assemblies may include:

resistors: fixed (composition and wire wound), variable (rheostats, potentiometers and trimmers),and non-linear (thermistors)

capacitors: fixed (ceramic, plastic and electrolytic), variable, magnetic, transformers, chokes, relays, contactors, rectifiers, smoothing filters, voltage regulators and feedback

Electrical layouts

Electrical layouts may include:

domestic lighting

domestic power

commercial

lighting schedule

power schedule

factory electrification

flame proofing

buzz bar systems

3 phase

240 V and 415 V

Cable runs

Cable runs may include:

racking

schedules

Riser diagrams

Riser diagrams may include:

multi-storey

Switchboards

Switchboards may include:

layouts

wiring schedules

Appropriate personnel

Appropriate personnel may include:

designer

engineer

supervisor

contractor/consultant

builder

Support services

Support services may include:

estimating department and personnel

engineering department and personnel

drafting department and personnel

project manager

factory manager or staff